C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Jun 3, 2014 | 09:29 PM
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Can someone please tell me where the vacuum control actuator is located that directs the air flow doors? Thank you very much Bill.
79 Corvette.
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Old Jun 4, 2014 | 07:06 AM
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there are multiple actuators for the doors, there is one door for the heat/cool door that is cable driven, there is an actuator for the defrost/ac/heat door that is up behind the glove box, there is a door for the "fresh air" that is down behind the passenger kick panel, there is a door up in the passenger side fender (next to wipers).

the vacuum source comes off the manifold between the carb and dist.
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Old Jun 4, 2014 | 12:07 PM
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Originally Posted by Jig A Low
there are multiple actuators for the doors, there is one door for the heat/cool door that is cable driven, there is an actuator for the defrost/ac/heat door that is up behind the glove box, there is a door for the "fresh air" that is down behind the passenger kick panel, there is a door up in the passenger side fender (next to wipers).

the vacuum source comes off the manifold between the carb and dist.
Do you know what function the vacuum operated door in the passenger side fender controls? I have a capped 1/8 vacuum line in the windshield wiper tray that I am betting should be attached to that door.
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Old Jun 4, 2014 | 12:29 PM
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this link has the diagram of the 79 system

http://willcoxcorvette.com/repairand...lp.php?hID=273
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Old Jun 4, 2014 | 02:55 PM
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Originally Posted by MelWff
this link has the diagram of the 79 system

http://willcoxcorvette.com/repairand...lp.php?hID=273
Thanks!
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